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remaining airspace for the Forward Landfill, as of January 2000, is 51,040,000 cy. <br /> Appendix C presents information regarding air space, final, intermediate and <br /> daily cover requirements and remaining refuse capacity. The remaining capacity <br /> is projected to mid June 2002 when the subgrade elevations for the interim <br /> cover are to be met and is estimated to be approximately 46,702,900 cy (based <br /> on a refuse to soil volume ratio of 6:1 and a refuse density of 1,740 pounds per <br /> cy). The site capacity calculations reflecting this information are included in <br /> Appendix C. <br /> 4.6 SITE LIFE PROJECTION <br /> 4.6.1 SITE LIFE CALCULATIONS <br /> In order to calculate the site life for the Forward Landfill, the following criteria <br /> was utilized. <br /> • Remaining Site Capacity (with liner, daily, <br /> intermediate and final cover) 51 mcy <br /> • Refuse to Cover Ratio 6:1 <br /> • In-Place Density 1,740 lbs/cy <br /> Based on the above criteria and utilizing a starting inflow rate of 30,631 <br /> tons/week with a 2 percent annual growth rate and a maximum weekly <br /> permitted refuse Inflow rate of 4 <br /> ' 6080 tons <br /> _ rv, .. _.. week, the Forward Landfill will have <br /> a projected site life of 17 years. Based on these calculations (see Table 8) <br /> operations at the Forward Landfill could extend to August 2020. <br /> 4.6.2 FACTORS AFFECTING SITE CAPACITY <br /> Many factors can affect the ultimate site capacity of a given landfill including <br /> variations in waste type, compaction rates, the use of alternative daily covers and <br /> the annual tonnage delivered to the landfill. The actual daily tonnage at the <br /> Forward Landfill depends greatly on the economy. Since a good majority of the <br /> waste accepted at the Forward Landfill will be construction/demolition type <br /> wastes, the inflow will be dependent on how much of that type of work is <br /> occurring in the area. The tonnage will also vary as the contracts with clients <br /> fluctuate and specialty markets change. Therefore, there may be times when the <br /> Forward Landfill JTD 4-10 <br /> L:\Allied\2000.793\Reports\itd:Sec-4.0:05/24/02 BRYAN A.STIRRAT&ASSOCIATES <br />